Oil cap  was replaced, codes cleared with a generic OBD reader/Torque and all has been well for weeks. Thanks for the advice.

My 2002 3.0i X53 has a non panoramic sunroof. A while back it made an awful graunching noise when moving to the closed position and it stuck part way open. I had to help it along to close it. Now I can't open it or tilt and the sun blind appears to have come off it's runners (this was stuck open ...

Quite often, when doing down a steep hill, having taken my foot off the accelerator, the brakes will be applied and the engine will rev to approx 4000 RPM. Someone has said that this is a "feature" akin to pre-emptive braking but to me it seems like problem as it doesn't happen all the time and does ...

Thank you. V helpful. The car is a 2002 3.0i with 76k miles.

A week ago the EML lit and the OBD reader showed the above codes. I cleared the codes to see if they came up again. This afternoon EML and same codes. I looked under the bonnet and whilst there were no apparent holes in the pipework from the Mass Airflow meter I did notice that the oil filler cap ...